These cookies are one of my favorite. I made them with almonds but hazelnuts could also be used. It is a delicate cookie. I usually use either strawberry or apricot jam to sandwich them. Pictured are candy cane cut-outs and strawberry jam filling. These are really a labor of love because it is quite time consuming to make them. The dough is so buttery and sticky, it needs to be refrigerated for several hours in order to be able to roll it out and then one has to refrigerate the scraps again. Not to speak of rolling the dough out and making the cut-outs. But they sure look pretty and taste good too!